<?php
/* $Id$ */
/*
    firewall_nat_out.php
    Copyright (C) 2004 Scott Ullrich
    All rights reserved.

    originally part of m0n0wall (http://m0n0.ch/wall)
    Copyright (C) 2003-2004 Manuel Kasper <mk@neon1.net>.
    All rights reserved.

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:

    1. Redistributions of source code must retain the above copyright notice,
       this list of conditions and the following disclaimer.

    2. Redistributions in binary form must reproduce the above copyright
       notice, this list of conditions and the following disclaimer in the
       documentation and/or other materials provided with the distribution.

    THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
    INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
    AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
    AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    POSSIBILITY OF SUCH DAMAGE.
*/

##|+PRIV
##|*IDENT=page-firewall-nat-outbound
##|*NAME=Firewall: NAT: Outbound page
##|*DESCR=Allow access to the 'Firewall: NAT: Outbound' page.
##|*MATCH=firewall_nat_out.php*
##|-PRIV


require("guiconfig.inc");

if (!is_array($config['nat']['advancedoutbound']['rule']))
	$config['nat']['advancedoutbound']['rule'] = array();

$a_out = &$config['nat']['advancedoutbound']['rule'];


if ($_POST['apply']) {
	write_config();

	$retval = 0;

	config_lock();
	$retval |= filter_configure();
	config_unlock();

	if(stristr($retval, "error") <> true)
	        $savemsg = get_std_save_message($retval);
	else
		$savemsg = $retval;

	if ($retval == 0) {
		unlink_if_exists($d_natconfdirty_path);
		unlink_if_exists($d_filterconfdirty_path);
        }
}



if (isset($_POST['save']) && $_POST['save'] == "保存") {
	/* mutually exclusive settings - if user wants advanced NAT, we don't generate automatic rules */
	switch ($_POST['advancedoripsec']) {
	case "ipsecpassthru":
               	$config['nat']['ipsecpassthru']['enable'] = true;
               	unset($config['nat']['advancedoutbound']['enable']);
               	if(count($config['nat']['advancedoutbound']['rule']) == 0)
			unset($config['nat']['advancedoutbound']['rule']);
		break;
	case "advancedoutboundnat":
        	$was_enabled = isset($config['nat']['advancedoutbound']['enable']);
		$config['nat']['advancedoutbound']['enable'] = true;
		if (isset($config['nat']['ipsecpassthru']['enable']))
			unset($config['nat']['ipsecpassthru']['enable']);
		if($was_enabled == false) {
			/*
			 *    user has enabled advanced outbound nat -- lets automatically create entries
			 *    for all of the interfaces to make life easier on the pip-o-chap
			 */
			$ifdescrs = get_configured_interface_with_descr();
				
			foreach($ifdescrs as $if => $ifdesc) {
				if (interface_has_gateway($if))
					continue;
				if($ifdesc == "wan")
					continue;
				$natent = array();
				$osipaddr = get_interface_ip($if);
				$ossubnet = get_interface_subnet($if);
				if (!is_ipaddr($osipaddr) || empty($ossubnet))
					continue;
				$osn = gen_subnet($osipaddr, $ossubnet);
				$natent['source']['network'] = "{$osn}/{$ossubnet}";
				$natent['sourceport'] = "";
				$natent['descr'] = "Auto created rule for {$ifdesc}";
				$natent['target'] = "";
				$natent['interface'] = "wan";
				$natent['destination']['any'] = true;
				$natent['natport'] = "";
				$a_out[] = $natent;
			}
			$savemsg = "已为所有接口创建默认规则。";
		}
		break;
	}
        write_config();
        touch($d_natconfdirty_path);
        header("Location: firewall_nat_out.php");
        exit;
}

if (isset($_POST['del_x'])) {
        /* delete selected rules */
        if (is_array($_POST['rule']) && count($_POST['rule'])) {
                foreach ($_POST['rule'] as $rulei) {
                        unset($a_out[$rulei]);
                }
                write_config();
                touch($d_natconfdirty_path);
                header("Location: firewall_nat_out.php");
                exit;
        }

} else {
        /* yuck - IE won't send value attributes for image buttons, while Mozilla does - so we use .x/.y to find move button clicks instead... */
        unset($movebtn);
        foreach ($_POST as $pn => $pd) {
                if (preg_match("/move_(\d+)_x/", $pn, $matches)) {
                        $movebtn = $matches[1];
                        break;
                }
        }
        /* move selected rules before this rule */
        if (isset($movebtn) && is_array($_POST['rule']) && count($_POST['rule'])) {
                $a_out_new = array();

                /* copy all rules < $movebtn and not selected */
                for ($i = 0; $i < $movebtn; $i++) {
                        if (!in_array($i, $_POST['rule']))
                                $a_out_new[] = $a_out[$i];
                }

                /* copy all selected rules */
                for ($i = 0; $i < count($a_out); $i++) {
                        if ($i == $movebtn)
                                continue;
                        if (in_array($i, $_POST['rule']))
                                $a_out_new[] = $a_out[$i];
                }

                /* copy $movebtn rule */
                if ($movebtn < count($a_out))
                        $a_out_new[] = $a_out[$movebtn];

                /* copy all rules > $movebtn and not selected */
                for ($i = $movebtn+1; $i < count($a_out); $i++) {
                        if (!in_array($i, $_POST['rule']))
                                $a_out_new[] = $a_out[$i];
                }
                if (count($a_out_new) > 0)
			$a_out = $a_out_new;
		else
			unset($config['nat']['advancedoutbound']);

                write_config();
                touch($d_natconfdirty_path);
                header("Location: firewall_nat_out.php");
                exit;
        }
}


$pgtitle = array("防火墙","NAT管理","NAT规则");
$pgmenu = array('nat', '/firewall_nat_out.php');
include("head.inc");

?>
<body link="#0000CC" vlink="#0000CC" alink="#0000CC">
<?php include("fbegin.inc"); ?>
<div class="soft_cont_right_table">
<form action="firewall_nat_out.php" method="post" name="iform">
<script type="text/javascript" language="javascript" src="/javascript/row_toggle.js">
</script>
<?php if ($savemsg) print_info_box($savemsg); ?>
<?php if (file_exists($d_natconfdirty_path)): ?><p>
<?php print_info_box_np("NAT配置已更改。<br>请应用更改使其生效。");?><br>
<?php endif; ?>
<table width="100%" border="0" cellpadding="0" cellspacing="0">  <tr><td>
<?php
	$tab_array = array();
	$tab_array[] = array("端口转发", false, "firewall_nat.php");
	$tab_array[] = array("1:1 NAT", false, "firewall_nat_1to1.php");
	$tab_array[] = array("NAT规则", true, "firewall_nat_out.php");
//	display_top_tabs($tab_array);
?>
  </td></tr>
  
  <tr>
    <td>
	<div id="mainarea">
              <table class="tabcont" width="100%" border="0" cellpadding="6" cellspacing="0">
              <tr>
  <td class="soft_tabtr">NAT规则</td>
  </tr> 
              <tr>
                  <td class="vtable"><p>
                      <input name="advancedoripsec" type="radio" id="ipsecpassthru" value="ipsecpassthru" <?php if (!isset($config['nat']['advancedoutbound']['enable'])) echo "checked";?>>
                      <strong><?=gettext("自动创建NAT规则。");?></strong></p>
                  </td>
                </tr>
                <tr>
                  <td class="vtable"><p>
                      <input name="advancedoripsec" type="radio" id="advancedoutbound" value="advancedoutboundnat" <?php if (isset($config['nat']['advancedoutbound']['enable'])) echo "checked";?>>
                      <strong><?=gettext("手动创建NAT规则。");?></strong></p></td>
                </tr>
                <tr>
                  <td> <input name="save" type="submit" class="formbtn" value="保存">
                  </td>
                </tr>
                <tr>
                  <td colspan="2"><p><span class="vexpl"><span class="red"><strong>Note:<br>
                      </strong></span>如果开启了手动创建规则，将不会自动为接口创建NAT规则，仅仅使用下面定义的NAT规则。
                         如果使用自动创建规则，除了WAN以外的接口都会自动创建相应的NAT规则。
                        </span><br>
                      <br>
                      您可以在下面编辑自己的NAT规则。</p>
                    </td>
                </tr>
              </table>
              <table class="tabcont" width="100%" border="0" cellpadding="0" cellspacing="0">
                <tr id="frheader">
                  <td width="3%" class="list">&nbsp;</td>
                  <td width="3%" class="list">&nbsp;</td>
                  <td width="8%" class="listhdrr">接口</td>
                  <td width="15%" class="listhdrr">源地址</td>
                  <td width="12%" class="listhdrr">源端口</td>
                  <td width="15%" class="listhdrr">目的地址</td>
                  <td width="13%" class="listhdrr">目的端口</td>
                  <td width="15%" class="listhdrr">NAT地址</td>
                  <td width="13%" class="listhdrr">NAT端口</td>
		          <td width="13%" class="listhdrr">静态端口</td>
                  <td width="15%" class="listhdr">描述</td>
                  <td width="5%" class="list">
                    <table border="0" cellspacing="0" cellpadding="1">
                      <tr>
			<td width="17"></td>
                        <td><a href="firewall_nat_out_edit.php"><img src="/themes/<?= $g['theme']; ?>/images/icons/icon_plus.gif" width="17" height="17" border="0" title="添加"></a></td>
                      </tr>
                    </table>
		  </td>
                </tr>
              <?php $nnats = $i = 0; foreach ($a_out as $natent): ?>
                <tr valign="top" id="fr<?=$nnats;?>">
                  <td class="listt"><input type="checkbox" id="frc<?=$nnats;?>" name="rule[]" value="<?=$i;?>" onClick="fr_bgcolor('<?=$nnats;?>')" style="margin: 0; padding: 0; width: 15px; height: 15px;"></td>
                  <td class="listt" align="center"></td>
                  <td class="listlr" onClick="fr_toggle(<?=$nnats;?>)" id="frd<?=$nnats;?>" onDblClick="document.location='firewall_nat_out_edit.php?id=<?=$nnats;?>';">
                    <?php
					if (!$natent['interface'] || ($natent['interface'] == "wan"))
					  	echo "WAN";
                                        else if (!$natent['interface'] || ($natent['interface'] == "lan"))
                                                 echo "LAN";                                                
					else if ($natent['interface'] == "openvpn")
						echo "OpenVPN";
					else
						echo htmlspecialchars($config['interfaces'][$natent['interface']]['descr']);
					?>
                                        &nbsp;
                  </td>
                  <td class="listr" onClick="fr_toggle(<?=$nnats;?>)" id="frd<?=$nnats;?>" onDblClick="document.location='firewall_nat_out_edit.php?id=<?=$nnats;?>';">
                    <?=$natent['source']['network'];?>
                  </td>
                  <td class="listr" onClick="fr_toggle(<?=$nnats;?>)" id="frd<?=$nnats;?>" onDblClick="document.location='firewall_nat_out_edit.php?id=<?=$nnats;?>';">
                    <?php
                      if (!$natent['sourceport'])
                          echo "*";
                      else
                          echo $natent['sourceport'];
                    ?>
                  </td>
                  <td class="listr" onClick="fr_toggle(<?=$nnats;?>)" id="frd<?=$nnats;?>" onDblClick="document.location='firewall_nat_out_edit.php?id=<?=$nnats;?>';">
                    <?php
                      if (isset($natent['destination']['any']))
                          echo "*";
                      else {
                          if (isset($natent['destination']['not']))
                              echo "!&nbsp;";
                          echo $natent['destination']['address'];
                      }
                    ?>
                  </td>
                  <td class="listr" onClick="fr_toggle(<?=$nnats;?>)" id="frd<?=$nnats;?>" onDblClick="document.location='firewall_nat_out_edit.php?id=<?=$nnats;?>';">
                    <?php
                      if (!$natent['dstport'])
                          echo "*";
                      else
                          echo $natent['dstport'];
                    ?>
                  </td>
                  <td class="listr" onClick="fr_toggle(<?=$nnats;?>)" id="frd<?=$nnats;?>" onDblClick="document.location='firewall_nat_out_edit.php?id=<?=$nnats;?>';">
                    <?php
                      if (!$natent['target'])
                          echo "*";
                      else
                          echo $natent['target'];
                    ?>
                  </td>
                  <td class="listr" onClick="fr_toggle(<?=$nnats;?>)" id="frd<?=$nnats;?>" onDblClick="document.location='firewall_nat_out_edit.php?id=<?=$nnats;?>';">
                    <?php
                      if (!$natent['natport'])
                          echo "*";
                      else
                          echo $natent['natport'];
                    ?>
                  </td>
                  <td class="listr" onClick="fr_toggle(<?=$nnats;?>)" id="frd<?=$nnats;?>" onDblClick="document.location='firewall_nat_out_edit.php?id=<?=$nnats;?>';">
                    <?php
			if(isset($natent['staticnatport']))
			    echo "<CENTER>YES</CENTER>";
			else
			    echo "<CENTER>NO</CENTER>";
                    ?>		    
                  </td>
                  <td class="listbg"  onClick="fr_toggle(<?=$nnats;?>)" onDblClick="document.location='firewall_nat_out_edit.php?id=<?=$nnats;?>';">
                    <?=htmlspecialchars($natent['descr']);?>&nbsp;
                  </td>
                  <td class="list" valign="middle" nowrap>
                    <table border="0" cellspacing="0" cellpadding="1">
                      <tr>
                        <td><a href="firewall_nat_out_edit.php?id=<?=$i;?>"><img src="/themes/<?= $g['theme']; ?>/images/icons/icon_e.gif" width="17" height="17" border="0" title="编辑"></a></td>
                      </tr>
                      <tr>
                        <td><input onMouseOver="fr_insline(<?=$nnats;?>, true)" onMouseOut="fr_insline(<?=$nnats;?>, false)" name="move_<?=$i;?>" src="/themes/<?= $g['theme']; ?>/images/icons/icon_left.gif" title="移动到该规则前" height="17" type="image" width="17" border="0"></td>
                        <td><a href="firewall_nat_out_edit.php?dup=<?=$i;?>"><img src="/themes/<?= $g['theme']; ?>/images/icons/icon_plus.gif" title="以该规则为基础添加" width="17" height="17" border="0"></a></td>
                      </tr>
                    </table>
              <?php $i++; $nnats++; endforeach; ?>
                <tr>
                  <td class="list" colspan="11"></td>
                  <td class="list" valign="middle" nowrap>
                    <table border="0" cellspacing="0" cellpadding="1">
                      <tr>
                        <td><?php if ($nnats == 0): ?><img src="/themes/<?= $g['theme']; ?>/images/icons/icon_left_d.gif" width="17" height="17" title="移动到底部" border="0"><?php else: ?><input name="move_<?=$i;?>" type="image" src="/themes/<?= $g['theme']; ?>/images/icons/icon_left.gif" width="17" height="17" title="移动到底部" border="0"><?php endif; ?></td>
                        <td><a href="firewall_nat_out_edit.php"><img src="/themes/<?= $g['theme']; ?>/images/icons/icon_plus.gif" width="17" height="17" border="0" title="添加"></a></td>
                      </tr>
                      <tr>
                        <td><?php if ($nnats == 0): ?><img src="/themes/<?= $g['theme']; ?>/images/icons/icon_x_d.gif" width="17" height="17" title="删除所选规则" border="0"><?php else: ?><input name="del" type="image" src="/themes/<?= $g['theme']; ?>/images/icons/icon_x.gif" width="17" height="17" title="删除所选规则" onClick="return confirm('是否确认删除？')"><?php endif; ?></td>
                      </tr>
                    </table></td>
                </tr>
              </table>
	    </div>
</td>
  </tr>
</table>
            </form>
            </div>
<?php include("fend.inc"); ?>
</body>
</html>
